Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The effectiveness of debris reduction using magnetically guided pulsed laser deposition (MGPLD) is reported here. KrF laser pulses (248 nm) of 100 mJ energy were focused to intensities of 6×109 W/cm2 onto the surface of a copper or a carbon source target and a magnetic field of 0.3 T as used to steer the plasma around…
Fourier transform infrared spectra of single fibers of cotton and 18% NaOH treated cotton were obtained before and after fiber pressing to investigate the effect of pressing on the sample. Pressing resulted in improved spectral quality in some regions (e.g., OH stretching) and deteriorated spectral quality in other re…
The dielectric behaviors of Pb(Zn1/3Nb2/3)O3–PbTiO3–BaTiO3 (PZN–PT–BT) relaxor ferroelectric ceramics of several compositions have been investigated under high alternating electric field. In the broad temperature range of the diffuse phase transition, they show highly induced polarization. An unusual linear relation o…
The processability, curing characteristics, and mechanical properties of a window seal compound based on highly filled and oil extended EPDM rubber (R-EPDM) containing ground EPDM vulcanisate of known composition (W-EPDM) simulating the waste window seal product have been studied. A conventional mechanical grinder wit…
A new strontium lithium titanate with composition SrLi 2 Ti 6 O 14 has been discovered in the ternary system SrO - Li 2 O - TiO 2 . Single crystals of this compound have been grown by the flux method. The structure of SrLi 2 Ti 6 O 14 has been solved using X-ray data (Mo-K α radiation, orthorhombic, space group Cmca,…
Simple preparative methods for the synthesis of a hexacoordinate silicate dianion with two tridentate citrato(3−) ligands have been developed. Thus, treatment of tetramethoxysilane with two molar equivalents of citric acid and two molar equivalents of tri(n-butyl)amine in tetrahydrofuran yielded tri(n-butyl)ammonium b…
We have successfully synthesized two kinds of novel well-defined chain-end-functionalized polystyrenes with one, two, three, and four perfluorooctyl (C8F17) groups and structurally analogous block copolymers, poly[styrene-b-4-(3-perfluoroocyl)propoxystyrene], by means of living anionic polymerization, followed by the…
Abstract The basic principles and methods of a non-equilibrium grain boundary theory are presented. A new approach for describing non-equilibrium grain boundaries in nano- and microcrystalline metals processed by equichannel angular pressing (NMC-ECAP metals) is proposed. To illustrate the opportunities of this theory…
ABSTRACT Soy films were prepared from water extract of whole soybean. The films' mechanical characteristics as affected by various solid concentrations of water‐to‐bean ratios, various plasticizer types and concentrations, and various pH values were investigated. Higher tensile strength along with lower elongation was…
Abstract A new indium yttrium germanate presenting the thortveitite structure with symmetry described by the space group C2/ m (No. 12) has been prepared by high temperature solid state reaction as polycrystalline powder material. This crystallizes in the monoclinic system, with cell parameters a = 6.8286(1) Å, b = 8.…
The crystals of Ca 2 (Al x Fe 1− x ) 2 O 5 with 0 ≤ x ≤ 0.4 were examined using powder XRD at temperatures between 25° and 1000°C. The Pcmn to Ibm 2 phase transition was readily detected by the disappearance of the 131 and 151 reflections ( h + k + l odd). Thus, the phase relationship has been determined as combined f…
The raw hides and skins are flayed from the animal and processed further to manufacture leather. As the main constituent of the raw skins and hides is protein, they are much susceptible for bacterial degradation. Thus, itis essential to preserve the protein matrix and also to arrest microbial attack temporarily. Sever…
X-ray diffraction (XRD) studies are very useful for distinguishing crystalline and non-crystalline states. Highly crystalline substances give patterns with sharp diffraction peaks or spots, whereas liquids or amorphous materials lie between these two extremes, because their chain length is large and it is difficult to…
The crystal structures for a suite of substituted pollucites with the compositions CsTi x Al 1– x Si 2 O 6+0.5 x , 0 ≤ x ≤ 1, have been determined from Rietveld analysis of powder synchrotron XRD data. Our results indicate that the pollucite end member (CsAlSi 2 O 6 ) has a tetragonal structure (space group I 4 1 / a…
RATIONALE AND OBJECTIVES: To characterize the pharmacokinetics of gadolinium and to evaluate the safety of gadobenate dimeglumine (Gd-BOPTA) compared with placebo, in subjects with impaired liver function. METHODS: Volunteer adult subjects with hepatic impairment (Child-Pugh classification B or C) received, randomly a…
The structural organization in binary immiscible fluids is studied in the presence of mobile particles. We show that the particles, which are included in the favorable phase due to a selective affinity and assemble therein, can drive the favorable phase to self-organize into cluster, interconnected, and network struct…
In this study, the effect of single and double-layer thin film coatings on the reflectance spectrum of silicon surfaces has been investigated. Thin film coatings have been prepared by vacuum evaporation of the materials with suitable refractive index. Reflectance measurements in the visible and near infrared have show…
In this study, thirty-six cultivars of U.S. upland cotton are selected and their wax content determined by the Conrad method. Both ring spun and open-end yarns are then made from these cottons. Various fiber and yarn properties are measured before and after wax removal using AFIS, HVI, the West Point cohesion tester,…
In this study, we investigated the relative contributions of atomic number (Z) and density (rho) to the degradation of the electron backscatter diffraction (EBSD) pattern quality for nanoparticles < 500 nm in diameter. This was accomplished by minimizing the diffuse scattering from the conventional thick mounting subs…
Abstract The crystalline texture and mechanical (tensile and flexural) properties of injection molded nylon 6 were evaluated to understand the influence of the melt temperature ( T mlt ), one of the key‐processing variables. The mechanical properties are found to be sensitive to T mlt only below ∼ 250°C. Rapid quenchi…